--
-- * Ralf Hinze and Ross Paterson,
-- \"Finger trees: a simple general-purpose data structure\",
--- to appear in /Journal of Functional Programming/.
+-- /Journal of Functional Programming/ 16:2 (2006) pp 197-217.
-- <http://www.soi.city.ac.uk/~ross/papers/FingerTree.html>
--
-- /Note/: Many of these operations have the same names as similar